Picture-frame clamp



2 D N A L Y A W L PICTURE FRAME CLAMP.

Patented Jan. 24, 1893.

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(No Model.)

'C. A. WAYLAND. PICTURE FRAME CLAMP.

Patented Jan. 24, 1893.

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COLUMBUS ALEXANDERWAYLAND, OF MIDDLESBOROUGH, KENTUCKY.

PICTURE-FRAME CLAMP.

SPECIFICATION forming part of Letters Patent No. 490,519, dated January24, 1893.

Application filed March 25, 1892. $eria1 NO- 426.400. (No model.)

To all whom it may concern:

Be it known that I, COLUMBUS ALEXANDER WAYLAND, of Middlesborough,in thecounty of Bell and State of Kentucky, have invented certain new anduseful Improvements in Picture-Frame Clamps; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawings, whichform part of this specification.

My invention relates to an improvement in picture frame clamps: and itconsists in certain novel features of construction which will be fullydescribed hereinafter, and more particularly referred to in the claims.

The object of myinvention is to provide an improved device which may bereadily adj usted for clamping frames of different sizes While beingglued or nailed, and which will hold the same firmly together as long asdesired.

Referring to the accompanying drawings,- Figure 1, is a perspective viewof my improved clamping table. Fig. 2, is a plan View of the same. Fig.3, is an inverted view of the table top. Fig. 4, is a detail view of oneof the clamping dogs.

A, represents the side rails of the table having the verticallyextending tracks or flanges B, and 0, represents the end of the tableframe. Mounted on one end of'the frame is the stationary top portion D,and upon the other end is the longitudinally moving top section E, whichrests upon the track B; extending inward from each of the outer cornersof these top sections are the converging blocks F, which are made flushwith the top surface of the table and which are formed with the slots G,as shown.

H, represents a screw shaft which is journaled at its inner end in theblock I, on the under side of the section D, and at its outer end on theend 0, of the frame. This shaft Works in a threaded boxing J, on theunder side of the top portion E, so that by revolving the said shaft thesection E, is adjusted in relation to the section D, which isstationary.

The frame clamps proper consist of the clamping heads H, having shanksL, which extend down through the slots G, in which they move and formedat the lower ends of the shanks-are the screw threaded sleeves K.

L, represents screw shafts which are beneath the slots G, and which workthrough the sleeves K, and by this means the clamping heads are adjustedtoward or away from the center of the table as may be desired. Theseshafts are journaled at their inner ends to the blocks I, J, on therespective table sections and at their outer ends to the ends of theblocks F. Each shaft is provided with an operating wheel M, on its outerend as shown. In order to prevent the moving section E, from jumping upwhile a frame is being clamped I provide the depending straps N, whichare turned under the side rails A, and by this means any verticalmovement of the section is prevented. From the fact that the tablesections are adjustable in relation to each other in addition to theadjustability of the clamping heads it will be seen thatthe dimensionsof the table can be expanded to accommodate a very long and wide frame.

The edges of the slots G, in the blocks F, are provided with scales asshown so that the corner clamps may be readily and accurately adjustedto equal distances from the center of the table.

Having thus described my invention, I claim 1. In a picture frame clamp,the combina tion of a support, the top sections or tables, theconverging wooden blocks F rigidly secured in slots in said tables, asdescribed, so as to be approximately flush. with the upper faces of saidtables and projecting outwardly beyond the edges of the tables, asshown, each block longitudinally slotted, sliding clamps on the blockshaving shanks extending down through the slots provided with threadedsleeves beneath the same, each block having a threaded shaft L extendingalong its under side and beyond the outer end thereof and through thethreaded sleeve and journaled at the ends of the block, substantially asshown and described.

2. In combination, the support having the ways, the stationary table D,the table E movable on said ways, the tables D, E, respectively, havingthe rigid blocks I, J, centrally at their adjoining edges, the screwshaft H passing through a threaded opening in block J and journaied inblock I, the converging I or J, as and for the purpose shown and demslotted blocks F secured in the tables and scribed.

abutting against the respective blocks I, J, In testimony whereofI aifixmy signature in the clamps on said blocks extending through presence oftwo witnesses.

the slots therein and the screw shafts L controlling said clamps andlocated 011 the COLUMBUS ALEXANDER WAYLAND' under sides of the blocks F,and at their outer Witnesses: ends journaled to said blocks and at theiriu- HENRY STEELE, ner ends journaled in their respective blocks H. J.MERWIN.

